|SCIENTIFIC DISCIPLINARY SECTOR||ING-IND/21|
The goal of the course is to gain knowledge of the basic principles that determine physical, metallurgical and chemical phenomena involved in the design of metallic materials.
The purpose of the course of Metals Science is to deepen the students' knowledge on the constituents of metallic materials (pure metals, solid solutions, intermetallic compounds) and on the microstructural aspects that influence their properties, with particular attention to the different types of crystalline defects.
It also aims to provide the student with the knowledge of the main chemical-physical and metallurgical phenomena related to the design of metallic materials in relation to the microstructure and desired properties.
At the end of the lessons and individual study the student will have acquired and consolidated theoretical knowledge on the structure, microstructure and transformations of metallic materials. Specifically, the student will be able to:
• know the main components of metallic materials
• relate the different types of crystalline defects with the properties of metallic materials
• understand the solid state phase transformations in these materials and the importance of these aspects for their design
The course includes theoretical lessons
Metallic elements. Notes on the metallic bond. Solid solutions, interstitial and substitutional, ordered and disordered. Intermetallic compounds: structure and properties. Structure-sensitive and structure-insensitive properties. The ideal and the real crystal. Crystal defects and their classification. Point defects: vacancies, interstitials, impurities. Defect concentration at the equilibrium state. Experimental study of point defects at thermal equilibrium and out of equilibrium state. Notes on linear defects: dislocations. Other types of 2D and 3D defects: surfaces, grain borders, precipitates, vacancy precipitation. Influence of defects on the properties of metallic materials. Diffusion in metals: macroscopic and microscopic aspects. Volume diffusion. Diffusion in homogeneous and eterogeneous systems. Diffusion coefficient and its experimental dependence from temperature. Atomic mechanisms of diffusion. Diffusion in alloys. Short circuits of diffusion. Homogeneous and eterogeneous solid state phase transitions. Phase transitions without diffusion.
- Material distributed by the teacher, available on the AulaWeb site
- “Physical Metallurgy”, R.W.Cahn, Ed. P.Haasen, North-Holland, Amsterdam
- “Inorganic Structural Chemistry”, Second Edition, Ulrich Muller, Ed. John Wiley & Sons, England
- “Diffusion in Solids- Fundamentals, Methods, Materials, Diffusion-Controlled Processes”, Helmut Mehrer, Springer series in Solid-State Sciences, Ed. Springer-Verlag, Germany
- Materials Science and Engineering – an Introduction, William D. Callister, Jr. David G. Rethwisch, Ed. John Wiley & Sons, England
Office hours: On appointment.
All class schedules are posted on the EasyAcademy portal.
The exam is oral, it is always conducted by two teachers and lasts approximately 45 minutes
With the examination methods indicated above, the commission is able to accurately verify the achievement of the teaching objectives. In fact, during the interview the commission evaluates both the knowledge acquired by the student and his / her ability to expose them, argue them, connect them and apply them to practical examples. When the objectives are not achieved, the student is invited to deepen the study and to ask further explanations to the teachers.